Inflatable back cushion



FIG. 1 is a front left perspective view of an inflatable back cushion in a folded-up configuration (and at least partially inflated), and in accordance with one embodiment of the present invention;

FIG. 2 is a front elevational view of the inflatable back cushion of FIG. 1;

FIG. 3 is a right side elevational view of the inflatable back cushion of FIG. 1;

FIG. 4 is a left side elevational view of the inflatable back cushion of FIG. 1;

FIG. 5 is a rear elevational view of the inflatable back cushion of FIG. 1;

FIG. 6 is a top plan view of the inflatable back cushion of FIG. 1;

FIG. 7 is a bottom plan view of the inflatable back cushion of FIG. 1;

FIG. 8 is a rear elevational view of the inflatable back cushion of FIG. 1, but shown in an unfolded or extended configuration;

FIG. 9 is a front elevational view of the inflatable back cushion in the same configuration of FIG. 8; and,

FIG. 10 is a front perspective view of the inflatable back cushion of FIG. 1, but shown in another configuration from a modified angle for further clarity.

The broken lines in the figures depict the portions of the inflatable back cushion that form no part of the claimed design. 

CLAIM The ornamental design for an inflatable back cushion, as shown and described. 